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Engine Data



  BMW 303




EngineInline six-cylinder
Displacement (bore* stroke)1173 cm³ (56,0 mm * 80,0 mm)
CrankshaftBeared fourfold
Compression ratio5,6 : 1
Engine controlohv, tappets, rocker arms
Mixture formation2 updraft carburettors
Tank capacity35 litres
Performance22 kW (30 HP) at 3500 rpm
Drive trainFront engine with rear-wheel drive
TransmissionFour-speed, 3./4. synchronized
Wheelbase2.400 mm
Turning circle11.000 mm
Front suspensionLateral arms, transversal leaf spring, lever silencer
Suspension f/rRigid axle, leaf springs, friction damper
BrakesDrums, cables
Tyres5.25 - 16 (3,25")
Length3.900 mm
Width1.440 mm
Height1.550 mm
BodyWooden frame, steel sheet
ChassisTubular frame
Payload460 kg
Kerb weight820 kg + driver
Top speedApprox. 90 km/h
Purchase price3,600 RM
Years of manufacture1933 - 1934
Electric system6 V/ 75 Ah/ 90 W
VariantCabrio


This car is remarkable. First of all, it was designed directly by BMW, although the bodywork was done by Daimler- Benz in Sindelfingen. The chassis is strongly improved as compared to its much criticized predecessor. The car can accommodate four people. Another feature is the new inline 6-cylinder engine with four-bearing crankshaft, a major leap as compared to its predecessor's double-bearing four-cylinder.


How intensive the relations with Daimler-Benz was, is demonstrated by the fact that three designs exist for the six-cylinder and they are presented to the technical head of Mercedes, Hans Nibel. His decision seems to have absolute priority. Only his criticism of the planned tubular frame ultimately remains unnoticed. And where one could buy the new 303? Of course, mainly as clearly advantageous tender in Mercedes-representations, except in Berlin (see picture below).

In terms of design, the 303 displays for the first time, the double kidney. It originates because BMW rounds the grill aerodynamically, resulting in a divided surface. Another reason for the rounding is the positioning of the trademark. The double grille grows into being one of the design features of BMW in the coming years, and still is today. 06/16






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